[PATCH] imx: Add support for i.MX8MN Beacon EmbeddedWorks devkit.

[ZHIZHIKIN Andrey]

Hello Adam,

> -----Original Message-----
> From: U-Boot <u-boot-bounces at lists.denx.de> On Behalf Of Adam Ford
> Sent: Thursday, December 10, 2020 5:08 PM
> To: u-boot at lists.denx.de
> Cc: aford at beaconembedded.com; Adam Ford <aford173 at gmail.com>; Stefano
> Babic <sbabic at denx.de>; Fabio Estevam <festevam at gmail.com>; NXP i.MX U-
> Boot Team <uboot-imx at nxp.com>
> Subject: [PATCH] imx: Add support for i.MX8MN Beacon EmbeddedWorks devkit.
> 
> 
> Beacon EmbeddedWorks is releasing a devkit based on the i.MX8M
> Nano SoC consisting of baseboard + SOM.
> 
> The kit is based on the same design as the Beacon dev kit with
> the i.MX8M Mini.
> 
> Signed-off-by: Adam Ford <aford173 at gmail.com>
> 

<snip>

> diff --git a/board/beacon/imx8mn/README b/board/beacon/imx8mn/README
> new file mode 100644
> index 0000000000..b1d7a19a39
> --- /dev/null
> +++ b/board/beacon/imx8mn/README
> @@ -0,0 +1,39 @@
> +U-Boot for the Beacon EmbeddedWorks i.MX8M Nano Devkit
> +
> +Quick Start
> +===========
> +- Build the ARM Trusted firmware binary
> +- Get ddr firmware
> +- Build U-Boot
> +- Boot
> +
> +Get and Build the ARM Trusted firmware
> +======================================
> +Note: $(srctree) is U-Boot source directory
> +
> +$ git clone https://source.codeaurora.org/external/imx/imx-atf
> +$ git checkout imx_5.4.47_2.2.0
> +$ make PLAT=imx8mn bl31 CROSS_COMPILE=aarch64-linux-gnu-
> +$ cp build/imx8mm/release/bl31.bin $(srctree)
> +
> +Get the DDR firmware
> +====================
> +$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.5.bin

There is a newer version of DDR firmware available from NXP:
https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.9.bin

It is also aligned with imx_5.4.47_2.2.0 ATF release, so for completeness purposes
I would recommend you to include the updated link into README file.

Yocto meta-freescale layer is already using this firmware version for mx8m series [1],
and it is operable.

I believe it would be beneficial to recommend users to pull the latest version available.

> +$ chmod +x firmware-imx-8.5.bin
> +$ ./firmware-imx-8.5
> +$ cp firmware-imx-8.5/firmware/ddr/synopsys/lpddr4*.bin $(srctree)
> +
> +Build U-Boot
> +============
> +$ make imx8mn_beacon_defconfig
> +$ make flash.bin CROSS_COMPILE=aarch64-linux-gnu-
> ATF_LOAD_ADDR=0x960000
> +
> +Burn U-Boot to microSD Card
> +===========================
> +$ sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=32
> +
> +Boot
> +====
> +Set baseboard DIP switch:
> +S17: 1100XXXX
> +

<snip>

> 2.25.1

Link: [1]: https://github.com/Freescale/meta-freescale/blob/master/recipes-bsp/firmware-imx/firmware-imx-8m_8.9.bb

-- andrey